httping: new package

Httping is like 'ping' but for http-requests.
Give it an url, and it'll show you how long it takes to connect,
send a request and retrieve the reply (only the headers)

[Peter: Drop ssl option, use make install, misc cleanup]
Signed-off-by: Gilles Talis <gilles.talis@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>